Learn Scala programming language, covering basics like variables, operators, and strings, and advanced topics like classes, functions, tail recursion, and Scala objects.

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This course teaches you programming in Scala, one of the most popular languages today, used by companies like Twitter and LinkedIn. Scala is a statically typed, high-level language that blends functional and object-oriented programming, making it ideal for building scalable applications.

 This course covers everything from basic concepts like Scala variables, type casting in Scala, and print in Scala to advanced topics like recursive functions in Scala, tail recursion, Scala classes, and more. Whether building scalable apps or improving your skills, this course will help you master Scala programming.

Learn Scala

Control structures are used for determining the output of a statement

Control structures dictate the flow in which statements are executed

Control structures are diagrams used for understanding the flow of execution

What are control structures used for?

Imperative programming is how to execute a sequence of code and declarative programming is what a sequence of code should do.

Declarative programming is how to execute a sequence of code and imperative programming is what a sequence of code should do.

Functional programming is a subset of imperative programming.

Functional programming is a subset of declarative programming

Which statements regarding imperative and declarative programming are true?
(Multiple correct answers)

Which statements regarding imperative and declarative programming are true?
(Multiple correct answers)

Meet me at the movies at 8pm with Sarah and Ben

Go to my room and open the closet; you will find the sweater on the right end.

Which statement is depictive of imperative programming?

Which statement is depictive of imperative programming?

How many control structures does Scala provide?

How many control structures does Scala provide?

In Scala, control structures return values just like functions.

In Scala, control structures are functions themselves.

In Scala, control structures take arguments like functions.

How does Scala bring a functional approach to imperative control structures?

How does Scala bring a functional approach to imperative control structures?

What will be the output of the following code:

```
val array = Array(1,2,3,4,5)

for (i <- 0 until array.length) {
 if (array(i) % 2 == 0) {
 println(array(i))
 }
}
```

What will be the output of the following code:
<pre><code>val array = Array(1,2,3,4,5)

for (i &lt;- 0 until array.length) {
 if (array(i) % 2 == 0) {
 println(array(i))
 }
}
</code></pre>

What will be the output of the following code:

```
val constantPattern: Any = List()

constantPattern match {
  case 5 => print("five")
  case true => print("truth")
  case "hello" => print("hi!")
  case Nil => print("the empty list")
  case _ => print("something else")
} 
```

What will be the output of the following code:
<pre><code>val constantPattern: Any = List()

constantPattern match {
 case 5 =&gt; print(&quot;five&quot;)
 case true =&gt; print(&quot;truth&quot;)
 case &quot;hello&quot; =&gt; print(&quot;hi!&quot;)
 case Nil =&gt; print(&quot;the empty list&quot;)
 case _ =&gt; print(&quot;something else&quot;)
} 
</code></pre>

What will be the output of the following code:

```
val sequencePattern = Array(1,2,0)

sequencePattern match {
  case Array(0,_,_)  => println("case1")
  case Array(1,_,_)  => println("case2")
  case Array(_,_,0)  => println("case3")
  case _ => println("default")
}
```

What will be the output of the following code:
<pre><code>val sequencePattern = Array(1,2,0)

sequencePattern match {
 case Array(0,_,_) =&gt; println(&quot;case1&quot;)
 case Array(1,_,_) =&gt; println(&quot;case2&quot;)
 case Array(_,_,0) =&gt; println(&quot;case3&quot;)
 case _ =&gt; println(&quot;default&quot;)
}
</code></pre>

<code>while</code> is an expression.

Unlike the other control structures, it is not an expression.

Unlike the other control structures, it doesn't have a return value.

In Scala, the other control structures are preferred over `while`.

How is `while` different from the other control structures?

How is <code>while</code> different from the other control structures?

In the next chapter, we will jump to functions and start seeing Scala's actual power.

In the following quiz, you will be tested on concepts you learned in this chapter.

Introduction to Scala

Variable in Scala

Scala Operators

Scala Strings

Scala Library

Scala Control Structures

Functions in Scala

High Order Functions in Scala

Scala Classes

Conclusion

Chapter Quiz